US6694141B1 - Channel selection in a radio link system - Google Patents
Channel selection in a radio link system Download PDFInfo
- Publication number
- US6694141B1 US6694141B1 US09/458,933 US45893399A US6694141B1 US 6694141 B1 US6694141 B1 US 6694141B1 US 45893399 A US45893399 A US 45893399A US 6694141 B1 US6694141 B1 US 6694141B1
- Authority
- US
- United States
- Prior art keywords
- channel
- radio link
- node
- link
- interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/14—WLL [Wireless Local Loop]; RLL [Radio Local Loop]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1997/003314 WO1998059435A1 (en) | 1997-06-24 | 1997-06-24 | A method to allocate channels for a fixed radio link operating in an non-coordinated frequency band |
PCT/FI1998/000247 WO1998059511A1 (en) | 1997-06-24 | 1998-03-20 | Channel selection in a radio link system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1998/000247 Continuation WO1998059511A1 (en) | 1997-06-24 | 1998-03-20 | Channel selection in a radio link system |
Publications (1)
Publication Number | Publication Date |
---|---|
US6694141B1 true US6694141B1 (en) | 2004-02-17 |
Family
ID=8166671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/458,933 Expired - Lifetime US6694141B1 (en) | 1997-06-24 | 1999-12-10 | Channel selection in a radio link system |
Country Status (8)
Country | Link |
---|---|
US (1) | US6694141B1 (en) |
EP (1) | EP0983704B1 (en) |
JP (2) | JP4160129B2 (en) |
CN (1) | CN1115072C (en) |
AT (1) | ATE256371T1 (en) |
AU (2) | AU3344297A (en) |
DE (1) | DE69820437T2 (en) |
WO (2) | WO1998059435A1 (en) |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010046216A1 (en) * | 2000-05-12 | 2001-11-29 | Paulus Carpelan | Method of assigning radio channels in wireless network |
US20020003782A1 (en) * | 2000-07-10 | 2002-01-10 | Interdigital Technology Corporation | Code power measurement for dynamic channel allocation |
US20030064745A1 (en) * | 1996-04-18 | 2003-04-03 | Mathilde Benveniste | Method for self-calibration of a wireless communication system |
US20030068975A1 (en) * | 2001-08-06 | 2003-04-10 | The Research Foundation Of Suny | Integrated cellular and ad hoc relaying system |
US20030078051A1 (en) * | 2001-08-10 | 2003-04-24 | Imad Fattouch | Method and apparatus for planning frequencies |
US20030087645A1 (en) * | 2001-11-08 | 2003-05-08 | Kim Byoung-Jo J. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
US20030096615A1 (en) * | 2000-02-23 | 2003-05-22 | Michael Beckers | Signaling of a call in a telecommunications system between a base station and a mobile component |
US20040033789A1 (en) * | 2002-08-19 | 2004-02-19 | Tsien Chih C. | Dynamic frequency selection and radar detection with a wireless LAN |
US20040085896A1 (en) * | 2002-11-04 | 2004-05-06 | Agere Systems Inc. | Dynamic channel selector and method of selecting a channel in a wireless local area network |
US20040143678A1 (en) * | 2000-12-29 | 2004-07-22 | Amalavoyal Narashima Chari | Method and system to provide a routing protocol for wireless devices |
US7031293B1 (en) * | 2001-03-26 | 2006-04-18 | Tropos Networks, Inc. | Method and system to provide increased data throughput in a wireless multi-hop network |
US20060104197A1 (en) * | 2000-02-24 | 2006-05-18 | Proctor James A Jr | Method and system for economical beam forming in a radio communication system |
US20060120324A1 (en) * | 2004-12-07 | 2006-06-08 | Cho Hyeon C | Wireless audio/video equipment and channel selecting method thereof |
WO2006107909A2 (en) * | 2005-04-01 | 2006-10-12 | Motorola, Inc. | Communication system and a processor and a method for use therein |
US20060252418A1 (en) * | 2005-05-06 | 2006-11-09 | Quinn Liam B | Systems and methods for RF spectrum management |
US20070008978A1 (en) * | 2005-07-11 | 2007-01-11 | Pirzada Fahd B | Network optimization based on traffic prioritization |
US20070032254A1 (en) * | 2005-08-02 | 2007-02-08 | Hitachi, Ltd. | System and method for providing efficient spectrum usage of wireless devices in unlicensed bands |
US20070167141A1 (en) * | 2006-01-17 | 2007-07-19 | Takahiko Akiyama | Radio communication system |
US20070297524A1 (en) * | 2006-06-13 | 2007-12-27 | Ben Jones | Approach for spectrum analysis in a receiver |
US7346357B1 (en) * | 2001-11-08 | 2008-03-18 | At&T Corp. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
US20080159217A1 (en) * | 2006-12-27 | 2008-07-03 | Samsung Electronics Co., Ltd. | Apparatus and method for gathering and reporting interference signal information between relay stations in multi-hop relay broadband wireless access communication system |
EP1942591A2 (en) * | 2007-01-05 | 2008-07-09 | Industrial Technology Research Institut | Methods for interference measurement and prediction |
US20080186932A1 (en) * | 2007-02-05 | 2008-08-07 | Duy Khuong Do | Approach For Mitigating The Effects Of Rogue Wireless Access Points |
US7551641B2 (en) | 2005-07-26 | 2009-06-23 | Dell Products L.P. | Systems and methods for distribution of wireless network access |
US20100184395A1 (en) * | 2009-01-21 | 2010-07-22 | Nils Bagge | Adaptive Channel Scanning For Detection And Classification Of RF Signals |
US20100184384A1 (en) * | 2009-01-21 | 2010-07-22 | Ben William Jones | Integrated Circuit For Signal Analysis |
US20100304682A1 (en) * | 2009-05-29 | 2010-12-02 | Choi Hyun Ho | Clustering method and communication device for coordinated multipoint transmission |
US20110216809A1 (en) * | 2001-01-25 | 2011-09-08 | Bandspeed, Inc. | Approach For Managing The Use Of Communications Channels Based On Performance |
US8023899B2 (en) | 2009-04-30 | 2011-09-20 | Bandspeed, Inc. | Approach for selecting communications channels in communication systems to avoid interference |
US20120134343A1 (en) * | 2000-05-05 | 2012-05-31 | Ipr Licensing, Inc. | Wireless channel allocation in a base station processor |
KR101212349B1 (en) | 2006-03-09 | 2012-12-13 | 주식회사 케이티 | Frequency planning method using Signal to Noise between sectors |
KR101401111B1 (en) * | 2008-03-19 | 2014-05-28 | 엘지전자 주식회사 | Apparatus and method for adaptive transmission based on interference termperature cognition in the cognitive radio system |
US8958744B2 (en) | 2011-02-28 | 2015-02-17 | Kabushiki Kaisha Toshiba | Wireless communication apparatus operable in different connection attempt states based on detection of interference |
US20150201252A1 (en) * | 2008-11-21 | 2015-07-16 | Echostar Technologies L.L.C. | Locally stored advertisements |
US10477420B2 (en) | 2017-01-13 | 2019-11-12 | At&T Intellectual Property I, L.P. | Cross link interference measurement for wireless communications in 5G or other next generation network |
US20210022148A1 (en) * | 2018-03-29 | 2021-01-21 | British Telecommunications Public Limited Company | An improved channel selection method for a wireless lan |
US11160088B2 (en) | 2017-01-06 | 2021-10-26 | Xi'an Zhongxing New Software Co., Ltd. | Data transmission method and device, and storage medium |
US11240675B2 (en) | 2017-08-09 | 2022-02-01 | Commscope Technologies Llc | Method and system for planning and operating fixed microwave communications systems |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1248477A1 (en) * | 2001-04-03 | 2002-10-09 | Telefonaktiebolaget L M Ericsson (Publ) | Method and device for controlling dynamic frequency selection within a wireless communication system |
US7496368B2 (en) | 2001-04-03 | 2009-02-24 | Sharp Kabushiki Kaisha | Method and device for controlling frequency selection within a wireless communication system |
DE60223594T2 (en) | 2001-05-25 | 2008-09-18 | Ntt Docomo, Inc. | Communication channel allocation method and corresponding communication device |
JP2003070056A (en) * | 2001-08-28 | 2003-03-07 | Ntt Docomo Inc | Communication-channel setting method, communication control apparatus, and radio communication system |
CN100527689C (en) | 2001-09-14 | 2009-08-12 | 艾利森电话股份有限公司 | A wireless communications system with detection of foreign radiation sources |
US7321601B2 (en) | 2001-09-26 | 2008-01-22 | General Atomics | Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation |
GB2447439B (en) | 2007-02-02 | 2012-01-25 | Ubiquisys Ltd | Access point power control |
US8670432B2 (en) * | 2009-06-22 | 2014-03-11 | Qualcomm Incorporated | Methods and apparatus for coordination of sending reference signals from multiple cells |
GB2471681B (en) | 2009-07-07 | 2011-11-02 | Ubiquisys Ltd | Interference mitigation in a femtocell access point |
GB2472597B (en) | 2009-08-11 | 2012-05-16 | Ubiquisys Ltd | Power setting |
JP5923711B2 (en) * | 2012-10-12 | 2016-05-25 | パナソニックIpマネジメント株式会社 | Communication device used in wireless network |
CN106488571B (en) * | 2015-08-28 | 2020-02-11 | 国基电子(上海)有限公司 | Channel selection method and system |
Citations (16)
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US4780885A (en) | 1982-12-01 | 1988-10-25 | Paul Haim D | Frequency management system |
US4829554A (en) * | 1985-01-31 | 1989-05-09 | Harris Corporation | Cellular mobile telephone system and method |
GB2250665A (en) | 1990-10-17 | 1992-06-10 | Northern Telecom Ltd | Improved call set-up in a radio communication system with dynamic channel allocation |
EP0578197A2 (en) | 1992-07-09 | 1994-01-12 | Nec Corporation | Channel assignment method in a mobile communication system |
EP0582373A2 (en) | 1992-07-17 | 1994-02-09 | Sun Microsystems, Inc. | Method and apparatus for implementing self-organization in a wireless local area network |
US5448754A (en) | 1993-05-07 | 1995-09-05 | Corporate Technology Partners | Radio frequency sharing personal communications system |
US5507008A (en) * | 1991-05-29 | 1996-04-09 | Nec Corporation | Channel assignment method in mobile communication system in which channel which meets predetermined criteria is channel selected |
US5548809A (en) | 1992-07-15 | 1996-08-20 | Southwestern Bell Technology Resources, Inc. | Spectrum sharing communications system and system for monitoring available spectrum |
US5551066A (en) * | 1993-06-07 | 1996-08-27 | Radio Local Area Networks, Inc. | Network link controller for dynamic designation of master nodes |
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EP0773636A1 (en) | 1995-11-13 | 1997-05-14 | Lucent Technologies Inc. | Resource allocation system for wireless networks |
WO1998002010A1 (en) | 1996-07-05 | 1998-01-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Process and device for quality determination in a radio communication system |
US5732353A (en) * | 1995-04-07 | 1998-03-24 | Ericsson Inc. | Automatic control channel planning in adaptive channel allocation systems |
US5933420A (en) * | 1996-04-30 | 1999-08-03 | 3Com Corporation | Method and apparatus for assigning spectrum of a wireless local area network |
US6023459A (en) * | 1996-12-04 | 2000-02-08 | Northern Telecom Limited | Frequency assignment in wireless networks |
US6112092A (en) * | 1996-04-18 | 2000-08-29 | Lucent Technologies Inc. | Self-configurable channel assignment system and method |
-
1997
- 1997-06-24 AU AU33442/97A patent/AU3344297A/en not_active Abandoned
- 1997-06-24 WO PCT/EP1997/003314 patent/WO1998059435A1/en active Application Filing
-
1998
- 1998-03-20 DE DE69820437T patent/DE69820437T2/en not_active Expired - Lifetime
- 1998-03-20 AT AT98910760T patent/ATE256371T1/en not_active IP Right Cessation
- 1998-03-20 CN CN98806590A patent/CN1115072C/en not_active Expired - Fee Related
- 1998-03-20 WO PCT/FI1998/000247 patent/WO1998059511A1/en active IP Right Grant
- 1998-03-20 AU AU65016/98A patent/AU6501698A/en not_active Abandoned
- 1998-03-20 JP JP50383499A patent/JP4160129B2/en not_active Expired - Fee Related
- 1998-03-20 EP EP98910760A patent/EP0983704B1/en not_active Expired - Lifetime
-
1999
- 1999-12-10 US US09/458,933 patent/US6694141B1/en not_active Expired - Lifetime
-
2008
- 2008-01-08 JP JP2008001062A patent/JP2008109714A/en active Pending
Patent Citations (17)
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Cited By (75)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6775549B2 (en) * | 1996-04-18 | 2004-08-10 | At&T Wireless Services, Inc. | Method for self-calibration of a wireless communication system |
US20030064745A1 (en) * | 1996-04-18 | 2003-04-03 | Mathilde Benveniste | Method for self-calibration of a wireless communication system |
US20030096615A1 (en) * | 2000-02-23 | 2003-05-22 | Michael Beckers | Signaling of a call in a telecommunications system between a base station and a mobile component |
US20060104197A1 (en) * | 2000-02-24 | 2006-05-18 | Proctor James A Jr | Method and system for economical beam forming in a radio communication system |
US9781626B2 (en) | 2000-05-05 | 2017-10-03 | Ipr Licensing, Inc. | Wireless channel allocation in a base station processor |
US20120134343A1 (en) * | 2000-05-05 | 2012-05-31 | Ipr Licensing, Inc. | Wireless channel allocation in a base station processor |
US8321542B1 (en) * | 2000-05-05 | 2012-11-27 | Ipr Licensing, Inc. | Wireless channel allocation in a base station processor |
US8521862B2 (en) * | 2000-05-05 | 2013-08-27 | Ipr Licensing, Inc. | Wireless channel allocation in a base station processor |
US20080089284A1 (en) * | 2000-05-12 | 2008-04-17 | Wi-Lan, Inc. | Assigning Radio Channels in a Wireless Network |
US7317704B2 (en) * | 2000-05-12 | 2008-01-08 | Wi-Lan, Inc. | Method of assigning radio channels in wireless network |
US20010046216A1 (en) * | 2000-05-12 | 2001-11-29 | Paulus Carpelan | Method of assigning radio channels in wireless network |
US8391214B2 (en) | 2000-05-12 | 2013-03-05 | Wi-Lan, Inc. | Assigning radio channels in a wireless network |
US8072924B2 (en) * | 2000-05-12 | 2011-12-06 | Wi-Lan, Inc. | Assigning radio channels in a wireless network |
US6993002B2 (en) * | 2000-07-10 | 2006-01-31 | Interdigital Technology Corp. | Code power measurement for dynamic channel allocation |
US20060072518A1 (en) * | 2000-07-10 | 2006-04-06 | Interdigital Technology Corporation | Code power measurement for dynamic channel allocation |
US20020003782A1 (en) * | 2000-07-10 | 2002-01-10 | Interdigital Technology Corporation | Code power measurement for dynamic channel allocation |
US20040143678A1 (en) * | 2000-12-29 | 2004-07-22 | Amalavoyal Narashima Chari | Method and system to provide a routing protocol for wireless devices |
US7689224B2 (en) | 2000-12-29 | 2010-03-30 | Tropos Networks, Inc. | Method and apparatus to provide a routing protocol for wireless devices |
US8873500B2 (en) | 2001-01-25 | 2014-10-28 | Bandspeed, Inc. | Approach for managing the use of communications channels based on performance |
US9883520B2 (en) | 2001-01-25 | 2018-01-30 | Bandspeed, Inc. | Approach for managing the use of communications channels based on performance |
US20110216809A1 (en) * | 2001-01-25 | 2011-09-08 | Bandspeed, Inc. | Approach For Managing The Use Of Communications Channels Based On Performance |
US8542643B2 (en) | 2001-01-25 | 2013-09-24 | Bandspeed, Inc. | Approach for managing the use of communications channels based on performance |
US9379769B2 (en) | 2001-01-25 | 2016-06-28 | Bandspeed, Inc. | Approach for managing the use of communications channels based on performance |
US7031293B1 (en) * | 2001-03-26 | 2006-04-18 | Tropos Networks, Inc. | Method and system to provide increased data throughput in a wireless multi-hop network |
US20060215605A1 (en) * | 2001-03-26 | 2006-09-28 | Devabhaktuni Srikrishna | Method and system to provide increased data throughput in a wireless multi-hop network |
US7668137B2 (en) | 2001-03-26 | 2010-02-23 | Tropos Networks, Inc. | Method and system to provide increased data throughput in a wireless multi-hop network |
US20030068975A1 (en) * | 2001-08-06 | 2003-04-10 | The Research Foundation Of Suny | Integrated cellular and ad hoc relaying system |
US20030078051A1 (en) * | 2001-08-10 | 2003-04-24 | Imad Fattouch | Method and apparatus for planning frequencies |
US7127212B2 (en) * | 2001-08-10 | 2006-10-24 | Societe Francaise Du Radiotelephone | Method and apparatus for planning frequencies |
US20030087645A1 (en) * | 2001-11-08 | 2003-05-08 | Kim Byoung-Jo J. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
US7206586B2 (en) * | 2001-11-08 | 2007-04-17 | At&T Corp. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
US7346357B1 (en) * | 2001-11-08 | 2008-03-18 | At&T Corp. | Frequency assignment for multi-cell IEEE 802.11 wireless networks |
US20040033789A1 (en) * | 2002-08-19 | 2004-02-19 | Tsien Chih C. | Dynamic frequency selection and radar detection with a wireless LAN |
US7155230B2 (en) * | 2002-08-19 | 2006-12-26 | Intel Corporation | Dynamic frequency selection and radar detection with a wireless LAN |
US20040085896A1 (en) * | 2002-11-04 | 2004-05-06 | Agere Systems Inc. | Dynamic channel selector and method of selecting a channel in a wireless local area network |
US7224697B2 (en) * | 2002-11-04 | 2007-05-29 | Agere Systems Inc. | Dynamic channel selector and method of selecting a channel in a wireless local area network |
US7359351B2 (en) * | 2004-12-07 | 2008-04-15 | Lg Electronics Inc. | Wireless audio/video equipment and channel selecting method thereof |
US20060120324A1 (en) * | 2004-12-07 | 2006-06-08 | Cho Hyeon C | Wireless audio/video equipment and channel selecting method thereof |
WO2006107909A2 (en) * | 2005-04-01 | 2006-10-12 | Motorola, Inc. | Communication system and a processor and a method for use therein |
WO2006107909A3 (en) * | 2005-04-01 | 2007-01-18 | Motorola Inc | Communication system and a processor and a method for use therein |
US7599686B2 (en) | 2005-05-06 | 2009-10-06 | Dell Products L.P. | Systems and methods for RF spectrum management |
US20060252418A1 (en) * | 2005-05-06 | 2006-11-09 | Quinn Liam B | Systems and methods for RF spectrum management |
US20070008978A1 (en) * | 2005-07-11 | 2007-01-11 | Pirzada Fahd B | Network optimization based on traffic prioritization |
US7474615B2 (en) | 2005-07-11 | 2009-01-06 | Dell Products L.P. | Network optimization based on traffic prioritization |
US7551641B2 (en) | 2005-07-26 | 2009-06-23 | Dell Products L.P. | Systems and methods for distribution of wireless network access |
US20070032254A1 (en) * | 2005-08-02 | 2007-02-08 | Hitachi, Ltd. | System and method for providing efficient spectrum usage of wireless devices in unlicensed bands |
US20070167141A1 (en) * | 2006-01-17 | 2007-07-19 | Takahiko Akiyama | Radio communication system |
KR101212349B1 (en) | 2006-03-09 | 2012-12-13 | 주식회사 케이티 | Frequency planning method using Signal to Noise between sectors |
US20070297524A1 (en) * | 2006-06-13 | 2007-12-27 | Ben Jones | Approach for spectrum analysis in a receiver |
US8023575B2 (en) | 2006-06-13 | 2011-09-20 | Bandspeed, Inc. | Approach for spectrum analysis in a receiver |
US20080159217A1 (en) * | 2006-12-27 | 2008-07-03 | Samsung Electronics Co., Ltd. | Apparatus and method for gathering and reporting interference signal information between relay stations in multi-hop relay broadband wireless access communication system |
US8175004B2 (en) | 2006-12-27 | 2012-05-08 | Samsung Electronics Co., Ltd | Apparatus and method for gathering and reporting interference signal information between relay stations in multi-hop relay broadband wireless access communication system |
KR100995531B1 (en) | 2006-12-27 | 2010-11-19 | 삼성전자주식회사 | Apparatus and method for gathering and transmitting the interference information between relay stations in multi-hop relay broadband wireless access communication system |
EP1942591A3 (en) * | 2007-01-05 | 2010-07-07 | Acer Incorporated | Methods for interference measurement and prediction |
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KR100930940B1 (en) | 2007-01-05 | 2009-12-10 | 인더스트리얼 테크놀로지 리써치 인스티튜트 | Method for Interference Measurement and Prediction |
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DE69820437T2 (en) | 2004-10-28 |
JP2002505053A (en) | 2002-02-12 |
CN1115072C (en) | 2003-07-16 |
WO1998059511A1 (en) | 1998-12-30 |
WO1998059435A1 (en) | 1998-12-30 |
AU6501698A (en) | 1999-01-04 |
ATE256371T1 (en) | 2003-12-15 |
AU3344297A (en) | 1999-01-04 |
EP0983704B1 (en) | 2003-12-10 |
JP4160129B2 (en) | 2008-10-01 |
JP2008109714A (en) | 2008-05-08 |
CN1261508A (en) | 2000-07-26 |
DE69820437D1 (en) | 2004-01-22 |
EP0983704A1 (en) | 2000-03-08 |
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